Current Conditions

Thornhill, Ontario

46°F8°C

Clear

Feels like42°F6°C

Wind

WNW 8 mph12 km/h

Humidity

45%

Cloud Cover

As of Saturday, October 17, 2026 at 2:41 PM EDT

Today's Outlook

Day

Mostly clear and cool, with a high of 46°F8°C and morning low of 34°F1°C. Breezy from the NW at 9 to 12 mph15 to 19 km/h. Very dry.

Night

Mostly clear, with a low around 40°F5°C. Breezy from the WSW at 8 to 9 mph13 to 14 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Clear	High 46°F8°CFeels 42°F6°C	Low 34°F1°CFeels 26°F-3°C	Precip 0 in0 mm—	Cloud 10%	Wind WNW 9 mph14 km/h	Saturday: Mostly clear and cool, with a high of 46°F8°C and morning low of 34°F1°C. Breezy from the NW at 9 to 12 mph15 to 19 km/h. Very dry. Saturday Night: Mostly clear, with a low around 40°F5°C. Breezy from the WSW at 8 to 9 mph13 to 14 km/h.
Clear	High 60°F16°C	Low 38°F4°CFeels 32°F0°C	Precip 0 in0 mm—	Cloud 2%	Wind SW 11 mph18 km/h	Sunday: Mostly clear and mild, with a high of 60°F16°C and morning low of 39°F4°C. Breezy from the SW at 12 to 13 mph19 to 22 km/h. Dry air. Sunday Night: Mostly clear, with a low around 38°F4°C. Breezy from the SW at 11 to 13 mph17 to 20 km/h.
Clear	High 64°F18°C	Low 44°F7°CFeels 39°F4°C	Precip 0 in0 mm—	Cloud 1%	Wind WSW 7 mph12 km/h	Monday: Mostly clear and mild, with a high of 64°F18°C and morning low of 44°F7°C. Breezy from the WSW at 7 to 8 mph11 to 13 km/h. Dry air. Monday Night: Mostly clear, with a low around 44°F7°C. Breezy from the WSW at 8 to 10 mph13 to 17 km/h.
Clear	High 61°F16°C	Low 43°F6°CFeels 38°F3°C	Precip 0 in0 mm—	Cloud 16%	Wind NNE 7 mph12 km/h	Tuesday: Mostly clear and mild, with a high of 61°F16°C and morning low of 43°F6°C. Breezy from the NE at 8 to 9 mph12 to 14 km/h. Dry air. Tuesday Night: Mostly clear, with a low around 43°F6°C. Breezy from the N at 7 to 9 mph11 to 15 km/h.
Clear	High 58°F15°C	Low 39°F4°CFeels 34°F1°C	Precip 0 in0 mm—	Cloud 13%	Wind ENE 6 mph10 km/h	Wednesday: Mostly clear and mild, with a high of 58°F15°C and morning low of 39°F4°C. Breezy from the ENE at 6 to 7 mph10 to 11 km/h. Dry air. Wednesday Night: Mostly clear, with a low around 40°F4°C. Breezy from the E at 6 to 8 mph10 to 13 km/h.
Clear	High 63°F17°C	Low 41°F5°CFeels 36°F2°C	Precip 0 in0 mm—	Cloud 7%	Wind NNW 8 mph12 km/h	Thursday: Mostly clear and mild, with a high of 63°F17°C and morning low of 41°F5°C. Breezy from the NNW at 8 mph12 km/h. Dry air. Thursday Night: Mostly clear, with a low around 41°F5°C. Breezy from the NNW at 8 to 9 mph12 to 14 km/h.
Clear	High 56°F14°C	Low 41°F5°CFeels 36°F2°C	Precip 0 in0 mm—	Cloud 12%	Wind ENE 8 mph13 km/h	Friday: Mostly clear and mild, with a high of 56°F14°C and morning low of 41°F5°C. Breezy from the E at 8 to 9 mph13 to 14 km/h. Dry air. Friday Night: Mostly clear, with a low around 42°F6°C. Breezy from the ENE at 8 to 9 mph13 to 15 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	SaturdayOct 17	46°F8°C Feels 42°F6°C	34°F1°C Feels 26°F-3°C	0 in0 mm· —	10%	Clear	WNW 9 mph14 km/h
DayMostly clear and cool, with a high of 46°F8°C and morning low of 34°F1°C. Breezy from the NW at 9 to 12 mph15 to 19 km/h. Very dry. NightMostly clear, with a low around 40°F5°C. Breezy from the WSW at 8 to 9 mph13 to 14 km/h.
	SundayOct 18	60°F16°C	38°F4°C Feels 32°F0°C	0 in0 mm· —	2%	Clear	SW 11 mph18 km/h
DayMostly clear and mild, with a high of 60°F16°C and morning low of 39°F4°C. Breezy from the SW at 12 to 13 mph19 to 22 km/h. Dry air. NightMostly clear, with a low around 38°F4°C. Breezy from the SW at 11 to 13 mph17 to 20 km/h.
	MondayOct 19	64°F18°C	44°F7°C Feels 39°F4°C	0 in0 mm· —	1%	Clear	WSW 7 mph12 km/h
DayMostly clear and mild, with a high of 64°F18°C and morning low of 44°F7°C. Breezy from the WSW at 7 to 8 mph11 to 13 km/h. Dry air. NightMostly clear, with a low around 44°F7°C. Breezy from the WSW at 8 to 10 mph13 to 17 km/h.
	TuesdayOct 20	61°F16°C	43°F6°C Feels 38°F3°C	0 in0 mm· —	16%	Clear	NNE 7 mph12 km/h
DayMostly clear and mild, with a high of 61°F16°C and morning low of 43°F6°C. Breezy from the NE at 8 to 9 mph12 to 14 km/h. Dry air. NightMostly clear, with a low around 43°F6°C. Breezy from the N at 7 to 9 mph11 to 15 km/h.
	WednesdayOct 21	58°F15°C	39°F4°C Feels 34°F1°C	0 in0 mm· —	13%	Clear	ENE 6 mph10 km/h
DayMostly clear and mild, with a high of 58°F15°C and morning low of 39°F4°C. Breezy from the ENE at 6 to 7 mph10 to 11 km/h. Dry air. NightMostly clear, with a low around 40°F4°C. Breezy from the E at 6 to 8 mph10 to 13 km/h.
	ThursdayOct 22	63°F17°C	41°F5°C Feels 36°F2°C	0 in0 mm· —	7%	Clear	NNW 8 mph12 km/h
DayMostly clear and mild, with a high of 63°F17°C and morning low of 41°F5°C. Breezy from the NNW at 8 mph12 km/h. Dry air. NightMostly clear, with a low around 41°F5°C. Breezy from the NNW at 8 to 9 mph12 to 14 km/h.
	FridayOct 23	56°F14°C	41°F5°C Feels 36°F2°C	0 in0 mm· —	12%	Clear	ENE 8 mph13 km/h
DayMostly clear and mild, with a high of 56°F14°C and morning low of 41°F5°C. Breezy from the E at 8 to 9 mph13 to 14 km/h. Dry air. NightMostly clear, with a low around 42°F6°C. Breezy from the ENE at 8 to 9 mph13 to 15 km/h.
	SaturdayOct 24	58°F14°C	39°F4°C Feels 34°F1°C	0 in0 mm· —	13%	Clear	ESE 7 mph12 km/h
DayMostly clear and mild, with a high of 58°F14°C and morning low of 39°F4°C. Breezy from the ESE at 7 to 8 mph12 to 12 km/h. Dry air. NightMostly clear, with a low around 39°F4°C. Breezy from the ESE at 7 to 8 mph12 to 12 km/h.
	SundayOct 25	61°F16°C	41°F5°C Feels 36°F2°C	0 in0.1 mm· 3%	28%	Clear	SSW 7 mph11 km/h
DayPartly cloudy and mild, with a high of 61°F16°C and morning low of 41°F5°C. Breezy from the SSW at 7 mph12 km/h. Dry air. NightPartly cloudy, with a low around 41°F5°C. Breezy from the SSW at 7 mph11 km/h.
	MondayOct 26	60°F16°C	45°F7°C Feels 40°F5°C	0.01 in0.3 mm· 7%	47%	Partly Cloudy	W 8 mph13 km/h
DayPartly cloudy and mild, with a high of 60°F16°C and morning low of 45°F7°C. Breezy from the W at 8 mph12 km/h. Dry air. NightPartly cloudy, with a low around 45°F7°C. Breezy from the W at 8 mph13 km/h.
	TuesdayOct 27	56°F14°C	45°F7°C Feels 40°F4°C	0.02 in0.5 mm· 9%	54%	Partly Cloudy	NW 8 mph13 km/h
DayMostly cloudy and mild, with a high of 56°F14°C and morning low of 45°F7°C. Breezy from the NW at 8 mph13 km/h. Dry air. NightMostly cloudy, with a low around 45°F7°C. Breezy from the NW at 8 to 9 mph13 to 14 km/h.
	WednesdayOct 28	54°F12°C	43°F6°C Feels 38°F3°C	0.02 in0.6 mm· 7%	56%	Partly Cloudy	WNW 8 mph13 km/h
DayMostly cloudy and mild, with a high of 54°F12°C and morning low of 43°F6°C. Breezy from the WNW at 8 mph13 km/h. Dry air. NightMostly cloudy, with a low around 43°F6°C. Breezy from the WNW at 8 mph13 km/h.
	ThursdayOct 29	54°F12°C	42°F6°C Feels 37°F3°C	0.02 in0.5 mm· 7%	60%	Partly Cloudy	S 8 mph13 km/h
DayMostly cloudy and mild, with a high of 54°F12°C and morning low of 42°F6°C. Breezy from the S at 8 to 9 mph13 to 14 km/h. Dry air. NightMostly cloudy, with a low around 42°F6°C. Breezy from the S at 8 mph13 km/h.
	FridayOct 30	55°F13°C	44°F7°C Feels 40°F4°C	0.05 in1.3 mm· 15%	70%	Drizzle	SSW 9 mph14 km/h
DayMostly cloudy and mild, with a high of 55°F13°C and morning low of 44°F7°C. Breezy from the SSW at 9 to 10 mph14 to 16 km/h. 15% chance of drizzle in the morning. Dry air. NightMostly cloudy, with a low around 44°F7°C. Breezy from the SSW at 8 to 9 mph13 to 14 km/h. 15% chance of drizzle before dawn.
	SaturdayOct 31	56°F13°C	47°F9°C Feels 43°F6°C	0.13 in3.2 mm· 24%	78%	Drizzle	SSW 9 mph15 km/h
DayOvercast and mild, with a high of 56°F13°C and morning low of 47°F9°C. Breezy from the SSW at 9 to 10 mph15 to 16 km/h. 24% chance of drizzle in the morning. Dry air. NightMostly cloudy, with a low around 47°F9°C. Breezy from the SSW at 9 mph14 km/h. 22% chance of drizzle overnight.

Nearby Cities

Newtonbrook East2 mi3 km Newtonbrook West2 mi3 km Westminster-Branson3 mi5 km Willowdale West3 mi5 km Willowdale East3 mi5 km Bayview Village3 mi6 km

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

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/weather/{country}/{region}/{city}/	/weather/united-states/california/san-francisco/	With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}	/weather/nearby?lat=48.1&lon=11.5	Find nearest city by coordinates
/weather/{country}/	/weather/germany/	Country index — all cities by region

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Coordinates: 43.8150°N, 79.4242°W·Elevation: 175m·Timezone: America/Toronto·Population: 115,292